Hi I play football (or soccer) every Thursday and I park my car in the external car park as normal and the alarm almost always go off a few times whilst I play. I have investigated and it doesn't seem to be the boot, windows or any intruders. It's fine other days of the week, it doesn't go off when on my driveway etc. I asked a friend and he said it would be very hard to diagnose and he thinks an alarm on one of the cars in the car park on Thursday could have similar frequencies as my alarm, so for example if that person uses the remote it somehow triggers my alarm too. Do you think it is possible so it's just a random thing and I shouldn't worry about it or do you think it's something else? Thanks in advance
Please run the test at Weird stuff happening? MPGs dropping? Test The Battery | PriusChat after the car has sat MANY hours or overnight (or you can use a voltmeter). Please tell us the 3 values (not just 1). Don't go changing the battery first until you tell us the values... If you have HIDs, you can avoid unnecessary cycles on the lights by toggling between off and parking light positions. Weird stuff can start happening w/a low or bad 12 volt. Don't waste $ on having a dealer "test" the 12 volt (07 Prius Dead - Any Guesses? | PriusChat). If you're on the original 12 volt, it's likely at end of life now.
Thanks, I will try this when I finish work. However my 12V was changed a few months ago and it's just really weird to happen on one day of the week.
An update. I did the test and the readings are follow: After choosing vehicle checking signal it reads 12.3V (0.1 lower than the range on that link) after pressing power button - 12v after charging - 14v does that look ok?
so if it wasn't the battery, would you think the clash of frequency might be the culprit? trying to source the alarm problem can be very time consuming, i would want to sure there is nothing for me to do before i call in the auto-electricians who by the way charge just a tad too high.
